On 7 February 1894, 25-year-old Herman Heller (1869–1931) founded the company „Hermann Heller Handelsgeschäft und Produktion von geschützten Artikeln und Uhrmacherwerkzeug“ – which traded and manufactured patented products and watchmaker's tools.

The company produced machinist vices, chimney cowls, fans and spiral stairs.

In the year 2000, the company was awarded certification to ISO 9001, QS 9000, TES and VDA 6.4 standards.

In 2007, HELLER introduced the ModuleLine manufacturing system and presented the H series of machining centres at EMO in Hanover.

[7] The HELLER Group operates production facilities around the globe, e.g. in Germany, UK, Brazil, United States and China.